CN101820181A - Battery device - Google Patents
Battery device Download PDFInfo
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- CN101820181A CN101820181A CN201010118389A CN201010118389A CN101820181A CN 101820181 A CN101820181 A CN 101820181A CN 201010118389 A CN201010118389 A CN 201010118389A CN 201010118389 A CN201010118389 A CN 201010118389A CN 101820181 A CN101820181 A CN 101820181A
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention is suitable for the field of explosion-proof security and provides a battery device. The battery device comprises a battery component and a protective circuit, wherein the protective circuit comprises a resistor unit, a safety element, an overcharge protection unit and a charge and discharge control unit; one end of the resistor unit is connected to the anode of the battery component, and the other end of the resistor unit is connected with one end of the safety element; the other end of the safety element is used as the anode of an output voltage; an over-discharge control end of the overcharge protection unit is connected to a first control end of the charge and discharge control unit; and an overcharge control end of the overcharge protection unit is connected to a second control end of the over-discharge control unit. In the battery device, the overcharge protection unit is used, so that overcharge, over-discharge and short circuit protections can be realized on a battery; and the safety element and the resistor unit are connected in series in a battery loop, so that battery energy is consumed on the resistor unit when the protective circuit and an external circuit are short-circuited. Therefore, fire and explosion accidents caused by rapid temperature rise of the battery can be avoided and intrinsic safe operation is realized.
Description
Technical field
The invention belongs to field of explosion-proof security, relate in particular to a kind of cell apparatus.
Background technology
Interlock circuit in the inbeing safe explosion prevention product must meet the essential safety requirement, and for the product that has battery, battery itself must be an essential safety device; Though existing battery is realizing that essential safety has all adopted protective circuit on requiring; in battery, install additional overcharge, overdischarge and short-circuit protection circuit; but in actual applying; still expose many serious problems; lost efficacy such as protective circuit, produced serious accidents such as battery burning or blast.The shortcoming that only adds this design of protective circuit in battery is: under worst situation when short trouble occurring (be protective circuit); be equivalent to both positive and negative polarity direct short-circuit battery; moment can produce a large amount of heats like this; may be on fire even blast, therefore the existing anti-explosion product that has lithium battery can not be accomplished absolute safety.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of cell apparatus, is intended to solve existing battery product problem on fire, explosion accident may take place.
The embodiment of the invention is achieved in that a kind of cell apparatus, and it comprises the battery component of one encapsulation and the protective circuit that is connected with described battery component; Described protective circuit comprises: resistance unit, safety element, over-charge protective unit and discharge and recharge control unit;
One end of described resistance unit is connected to the positive pole of described battery component, and the other end of described resistance unit is connected with an end of described safety element;
The other end of described safety element is as the positive pole of output voltage; The other end of described safety element also is connected to the power end of described over-charge protective unit;
The mistake of described over-charge protective unit is put control end and is connected to described first control end that discharges and recharges control unit; The control end that overcharges of described over-charge protective unit is connected to described second control end that discharges and recharges control unit;
The described input that discharges and recharges control unit is connected to the negative pole of described battery component; The described negative pole that discharges and recharges the output of control unit as output voltage.
Battery cell apparatus provided by the invention adopts that the over-charge protective unit makes that battery can be realized overcharging, overdischarge and short-circuit protection; make at protective circuit and external circuits all during short circuit by series connection safety element and resistance unit in cell circuit; the energy of battery can consume on resistance unit; avoid battery itself to be rapidly heated and cause generation on fire, explosion accident, realized essential safety work.
Description of drawings
Fig. 1 is the circuit diagram of protective circuit in the cell apparatus that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Cell apparatus that the embodiment of the invention provides adopts that the over-charge protective unit makes that battery can be realized overcharging, overdischarge and short-circuit protection; make at protective circuit and external circuits all during short circuit by series connection safety element and resistance unit in cell circuit; the energy of battery can consume on resistance unit; avoid battery itself to be rapidly heated and cause generation on fire, explosion accident, realized essential safety work.
The cell apparatus that the embodiment of the invention provides has been mainly used in damp and has existed in the environment, so the protective circuit of battery component and battery component is carried out the one encapsulation; Fig. 1 shows the circuit diagram of protective circuit in the cell apparatus that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
Cell apparatus comprises battery component (being connected between B+ and the B-, not shown) and the protective circuit that is connected with battery component; Wherein, protective circuit comprises: resistance unit 11, safety element F1, over-charge protective unit 12 and discharge and recharge control unit 13; One end of resistance unit 11 is connected to the anodal B+ of battery component, and the other end of resistance unit 11 is connected with the end of safety element F1; The other end of safety element F1 is as the anodal P+ of output voltage; The other end of safety element F1 also is connected to the power end of over-charge protective unit 12; The mistake of over-charge protective unit 12 is put control end OD and is connected to first control end that discharges and recharges control unit 13; The control end OC that overcharges of over-charge protective unit 12 is connected to second control end that discharges and recharges control unit 13; The input that discharges and recharges control unit 13 is connected to the negative pole B-of battery component; Discharge and recharge the negative pole P-of the output of control unit 13 as output voltage.
In embodiments of the present invention, by between over-charge protective unit 12 and battery, adding safety element F1 and resistance unit 11 formation series loops; Wherein safety element F1 can select fuse or fuse for use; The specification of safety element F1 chooses and the choosing of resistance of resistance R 4, resistance R 5 and resistance R 6 can be according to the actual requirements; Even under worst situation when short circuit (be protective circuit and external circuits all); also have safety element F1, resistance R 4, resistance R 5, resistance R 6 and battery to constitute the loop; the energy of battery can consume on parallel resistance R4, resistance R 5, resistance R 6 like this, avoids battery itself to be rapidly heated and causes generation on fire, explosion accident.
In embodiments of the present invention, resistance unit 11 comprises: the resistance R 4 that is connected in parallel, resistance R 5 and resistance R 6; The end that resistance R 4, resistance R 5 and resistance R 6 are connected in parallel is as an end of resistance unit 11; The other end that resistance R 4, resistance R 5 and resistance R 6 are connected in parallel is as the other end of resistance unit 11.
In embodiments of the present invention, over-charge protective unit 12 comprises: protection chip U1, resistance R 1, resistance R 2, resistance R 3, capacitor C 1 and capacitor C 2; The power end VCC of protection chip U1 is connected to the other end of safety element F1 by resistance R 1, and the power end VCC of protection chip U1 is also by capacitor C 1 ground connection; The ground end GND ground connection of protection chip U1; The current detecting input CS of protection chip U1 is by capacitor C 2 ground connection, and the current detecting input CS of protection chip U1 also is connected to the negative pole P-of output voltage by resistance R 3; Resistance R 2 is connected in parallel with capacitor C 2; The mistake of protection chip U1 is put control end OD and is connected to first control end that discharges and recharges control unit 13; The control end OC that overcharges of protection chip U1 is connected to second control end that discharges and recharges control unit 13.
In embodiments of the present invention, discharging and recharging control unit 13 comprises: the first metal-oxide-semiconductor Q1A, the second metal-oxide-semiconductor Q1B; The drain electrode of the first metal-oxide-semiconductor Q1A is connected with the drain electrode of the second metal-oxide-semiconductor Q1B; The grid of the first metal-oxide-semiconductor Q1A is as first control end that discharges and recharges control unit 13; The grid of the second metal-oxide-semiconductor Q1B is as second control end that discharges and recharges control unit 13; The source electrode of the first metal-oxide-semiconductor Q1A is as the input that discharges and recharges control unit 13; The source electrode of the second metal-oxide-semiconductor Q1B is as the output that discharges and recharges control unit 13.
For the cell apparatus that illustrates that further the embodiment of the invention provides, it is as follows now in conjunction with Fig. 1 in detail its operation principle to be described in detail:
B+ and B-represent the positive and negative of battery chip, and P+ and P-represent the positive and negative of output voltage; The positive pole of battery meets B+; an end of connecting resistance unit 11 then; the other end of resistance unit 11 is connected with the end of safety element F1; the other end of safety element F1 links to each other with P+; the other end of safety element F1 also links to each other by the power end VCC of resistance R 1 with protection chip U1; connect capacitor C 1 between the power end VCC of protection chip U1 and the ground end GND; the ground end GND of termination protection chip U1 after capacitor C 2 and resistance R 2 are in parallel; the current detecting input CS of another termination protective core sheet U1; current detecting input CS meets P-by resistance R 3; the mistake of protection chip U1 is put control end OD and is connect first control end that discharges and recharges control unit 13; discharge and recharge the input termination B-of control unit 13; discharge and recharge control unit 13 the second control termination U1 overcharge control end OC, discharge and recharge the output termination P-of control unit 13.
Battery is connected between B+ and the B-, and battery is from P+ and P-output voltage.During charging, the charger output voltage is connected between P+ and the P-, and B+ and the B-of electric current from P+ to the cell is again through discharging and recharging control unit 13 to P-.In the charging process, when the voltage of battery surpassed 4.30V, the control end OC output signal that overcharges of protection chip U1 made and discharges and recharges control unit 13 and turn-off, and battery stops charging immediately, thereby prevents that battery from damaging because of overcharging.In the discharge process, when the voltage of battery dropped to 3.0V, the mistake of protection chip U1 was put control end OD output signal and is made and discharge and recharge control unit 13 and turn-off, and battery stops discharge immediately, thereby prevents that battery from damaging because of overdischarge.The current detecting input CS of protection chip U1 is the current detecting pin; during output short-circuit; the conduction voltage drop that discharges and recharges control unit 13 increases severely; current detecting input CS voltage raises rapidly; protection chip U1 output signal makes and discharges and recharges control unit 13 and turn-offs rapidly, thus realization overcurrent or short-circuit protection.
Cell apparatus that the embodiment of the invention provides adopts that the over-charge protective unit makes that battery can be realized overcharging, overdischarge and short-circuit protection; make at protective circuit and external circuits all during short circuit by series connection safety element and resistance unit in cell circuit; the energy of battery can consume on resistance unit; avoid battery itself to be rapidly heated and cause generation on fire, explosion accident, realized essential safety work.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a cell apparatus is characterized in that, it comprises the battery component of one encapsulation and the protective circuit that is connected with described battery component; Described protective circuit comprises: resistance unit, safety element, over-charge protective unit and discharge and recharge control unit;
One end of described resistance unit is connected to the positive pole of described battery component, and the other end of described resistance unit is connected with an end of described safety element;
The other end of described safety element is as the positive pole of output voltage; The other end of described safety element also is connected to the power end of described over-charge protective unit;
The mistake of described over-charge protective unit is put control end and is connected to described first control end that discharges and recharges control unit; The control end that overcharges of described over-charge protective unit is connected to described second control end that discharges and recharges control unit;
The described input that discharges and recharges control unit is connected to the negative pole of described battery component; The described negative pole that discharges and recharges the output of control unit as output voltage.
2. cell apparatus as claimed in claim 1 is characterized in that, described over-charge protective unit comprises:
Protection chip, resistance R 1, resistance R 2, resistance R 3, capacitor C 1 and capacitor C 2;
The power end of described protection chip is connected to the other end of described safety element by described resistance R 1, and the power end of described protection chip is also by described capacitor C 1 ground connection;
The ground end ground connection of described protection chip;
The current detecting input of described protection chip is by described capacitor C 2 ground connection, and the current detecting input of described protection chip also is connected to the negative pole of output voltage by described resistance R 3; Described resistance R 2 is connected in parallel with described capacitor C 2;
The mistake of described protection chip is put control end and is connected to described first control end that discharges and recharges control unit;
The control end that overcharges of described protection chip is connected to described second control end that discharges and recharges control unit.
3. cell apparatus as claimed in claim 1 is characterized in that, the described control unit that discharges and recharges comprises: first metal-oxide-semiconductor and second metal-oxide-semiconductor;
The drain electrode of described first metal-oxide-semiconductor is connected with the drain electrode of described second metal-oxide-semiconductor; The grid of described first metal-oxide-semiconductor is as described first control end that discharges and recharges control unit; The grid of described second metal-oxide-semiconductor is as described second control end that discharges and recharges control unit; The source electrode of described first metal-oxide-semiconductor is as the described input that discharges and recharges control unit; The source electrode of described second metal-oxide-semiconductor is as the described output that discharges and recharges control unit.
4. cell apparatus as claimed in claim 1 is characterized in that, described resistance unit comprises: the resistance R 4 that is connected in parallel, resistance R 5 and resistance R 6;
The end that described resistance R 4, resistance R 5 and resistance R 6 are connected in parallel is as an end of described resistance unit;
The other end that described resistance R 4, resistance R 5 and resistance R 6 are connected in parallel is as the other end of described resistance unit.
5. cell apparatus as claimed in claim 1 is characterized in that, described safety element is fuse or fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118389A CN101820181A (en) | 2010-03-03 | 2010-03-03 | Battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118389A CN101820181A (en) | 2010-03-03 | 2010-03-03 | Battery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101820181A true CN101820181A (en) | 2010-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010118389A Pending CN101820181A (en) | 2010-03-03 | 2010-03-03 | Battery device |
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| CN (1) | CN101820181A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166200A (en) * | 2011-12-09 | 2013-06-19 | 海洋王照明科技股份有限公司 | Battery protection circuit and explosion-proof lighting device |
| CN103213508A (en) * | 2012-01-18 | 2013-07-24 | 比亚迪股份有限公司 | Driving control system of electric vehicle |
| CN105972473A (en) * | 2016-06-23 | 2016-09-28 | 浙江华彩光电科技有限公司 | Multifunctional intelligent informatization LED lighting equipment |
| CN109638903A (en) * | 2018-11-29 | 2019-04-16 | 北斗天地股份有限公司山东分公司 | A kind of battery and its protection circuit, intrinsic safety type smart phone |
| CN109672249A (en) * | 2019-01-22 | 2019-04-23 | 深圳流量链科技有限公司 | A kind of battery management protective device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5963019A (en) * | 1996-09-17 | 1999-10-05 | Samsung Electronics Co., Ltd. | Battery pack with battery protection circuit |
| CN2510716Y (en) * | 2001-10-26 | 2002-09-11 | 陈太华 | Nature-safety explosion-proof miner lamp |
| CN201178316Y (en) * | 2008-03-14 | 2009-01-07 | 中国人民解放军空军油料研究所 | Explosion-proof PDA and intrinsic safe battery thereof |
| CN101517315A (en) * | 2006-09-19 | 2009-08-26 | 永备电池有限公司 | Intrinsically safe battery powered power supply |
-
2010
- 2010-03-03 CN CN201010118389A patent/CN101820181A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5963019A (en) * | 1996-09-17 | 1999-10-05 | Samsung Electronics Co., Ltd. | Battery pack with battery protection circuit |
| CN2510716Y (en) * | 2001-10-26 | 2002-09-11 | 陈太华 | Nature-safety explosion-proof miner lamp |
| CN101517315A (en) * | 2006-09-19 | 2009-08-26 | 永备电池有限公司 | Intrinsically safe battery powered power supply |
| CN201178316Y (en) * | 2008-03-14 | 2009-01-07 | 中国人民解放军空军油料研究所 | Explosion-proof PDA and intrinsic safe battery thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166200A (en) * | 2011-12-09 | 2013-06-19 | 海洋王照明科技股份有限公司 | Battery protection circuit and explosion-proof lighting device |
| CN103166200B (en) * | 2011-12-09 | 2016-03-30 | 海洋王照明科技股份有限公司 | A kind of battery protecting circuit and explosion-proof lighting device |
| CN103213508A (en) * | 2012-01-18 | 2013-07-24 | 比亚迪股份有限公司 | Driving control system of electric vehicle |
| CN105972473A (en) * | 2016-06-23 | 2016-09-28 | 浙江华彩光电科技有限公司 | Multifunctional intelligent informatization LED lighting equipment |
| CN109638903A (en) * | 2018-11-29 | 2019-04-16 | 北斗天地股份有限公司山东分公司 | A kind of battery and its protection circuit, intrinsic safety type smart phone |
| CN109672249A (en) * | 2019-01-22 | 2019-04-23 | 深圳流量链科技有限公司 | A kind of battery management protective device |
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Application publication date: 20100901 |